RE: Why cd burn times vary so much.
When burning songs to cd in itunes at 8x most take about 8 min. Occasionally this time spikes to 17 min for no apparent reason. Any ideas as to the cause are appreciated.
Jeffrey Jones2 wrote:
An incremental backup only copies files that have changed, or are new, since the last backup. So if only one song was added to the iTunes library, only that song would be copied, not the whole library. On the other hand, if you have, say, a week's worth of new mail, the Mail folder might take a long time.
In fact, it would be a few weeks. But even where many songs have been added to iTunes, it has never taken more than 11 or 12 minutes to update, yet each song would be 3MB minimum; most email messages are just a few KB. So it can't be actual copying time?
Incidentally, I had to remove iPhoto from the Pictures backup, as it used to take hours stuck on that one thing alone.
Similar Messages
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Why do these insert vary so much in performance?
I have a table and a package similar to those shown in below DDL.
Table TABLE1 is populated in chunks of 10000 records from a remote database, thru TABLE1_PKG
by receiving arrays of data for three of its fields and a scalar value for a set identifier
in column named NUMBER_COLUMN_3.
I have two databases with following record count in the table:
DATABASE1: 55862629
DATABASE2: 64225247
When I executed the procedure to move 50000 records to each of the two databases, it took 20 seconds to
populate DATABASE1 and it took 150 seconds to populate DATABASE2. Network was discarded as I recorded
in the package how long each of the 5 10000 chunk took to insert in each of the two databases as follows:
Records Being Inserted Time it took in DATABASE1 Time it took in DATABASE2
First 10000 3 seconds 27 seconds
Second 10000 4 seconds 26 seconds
Third 10000 6 seconds 40 seconds
Fourth 10000 4 seconds 31 seconds
Fifth 10000 4 seconds 26 seconds
When I look at the explain plan in both databases I see following:
| Id | Operation | Name | Cost |
| 0 | INSERT STATEMENT | | 1 |
| 1 | LOAD TABLE CONVENTIONAL | | |
My questions:
1) Does the explain plan indicate that Direct Load was not used.
2) If the answer to 1 is Yes, is it possible to use Direct Load or a faster insert method in this case?
3) Any ideas what could be causing the 7.5 to 1 difference between the two databases.
Please note that these two databases are non production so load is negligible.
CREATE TABLE TABLE1
TABLE1_ID VARCHAR2(255) NOT NULL,
NUMBER_COLUMN_1 NUMBER,
NUMBER_COLUMN_2 NUMBER,
NUMBER_COLUMN_3 NUMBER
ALTER TABLE TABLE1 ADD CONSTRAINT TABLE1_PK PRIMARY KEY (TABLE1_ID);
CREATE INDEX NUMBER_COLUMN_3_IX ON TABLE1(NUMBER_COLUMN_3);
CREATE OR REPLACE PACKAGE TABLE1_PKG IS
TYPE VARCHAR2_ARRAY IS TABLE OF VARCHAR2(4000);
TYPE NUMBER_ARRAY IS TABLE OF NUMBER;
TYPE DATE_ARRAY IS TABLE OF DATE;
PROCEDURE Insert_Table1
Table1_Id_Array_In TABLE1_PKG.VARCHAR2_ARRAY,
Number_Column1_Array_In TABLE1_PKG.NUMBER_ARRAY,
Number_Column2_In TABLE1_PKG.NUMBER_ARRAY,
NUMBER_COLUMN_3_In NUMBER
END;
CREATE OR REPLACE PACKAGE BODY TABLE1_PKG IS
PROCEDURE Insert_Table1
Table1_Id_Array_In TABLE1_PKG.VARCHAR2_ARRAY,
Number_Column1_Array_In TABLE1_PKG.NUMBER_ARRAY,
Number_Column2_In TABLE1_PKG.NUMBER_ARRAY,
NUMBER_COLUMN_3_In NUMBER
IS
BEGIN
FORALL I IN 1..Table1_Id_Array_In.Count
INSERT /*+ APPEND */ INTO TABLE1 (TABLE1_ID , NUMBER_COLUMN_1 , NUMBER_COLUMN_2 , NUMBER_COLUMN_3 )
VALUES (Table1_Id_Array_In(I), Number_Column1_Array_In(I), Number_Column2_In(I), NUMBER_COLUMN_3_In);
END Insert_Account_Keys;
END;
Thanks,
ThomasI found answer for why Direct Path is not used when I do an insert into TABLE1@SOMEDATABASE SELECT....:
http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_9014.htm#i2163698
Direct-path INSERT is subject to a number of restrictions. If any of these
restrictions is violated, then Oracle Database executes conventional INSERT serially
without returning any message, unless otherwise noted:
You can have multiple direct-path INSERT
Queries that access the same table, partition, or index are allowed before the direct-path INSERT
If any serial or parallel statement attempts to access a table that has already been modified by a direct-path INSERT
The target table cannot be of a cluster.
The target table cannot contain object type columns.
Direct-pathINSERT
Direct-pathINSERTAPPENDAPPEND_VALUESINSERT
The target table cannot have any triggers or referential integrity constraints defined on it.
The target table cannot be replicated.
A transaction containing a direct-path INSERT
My table is being replicated and I am try it via a distributed transaction.
I am still puzzled as to why it took 2 minutes and 44 seconds to insert 10000 rows in our production database but that's something that I'll investigate if time permits. For now I've rewritten the process to use Insert...select if the number of records in the batch is less than or equal to a configured (currently set at 400000) number, else it will move using chunck and for now using bulk collect in the source pass arrays of data and FORALL inserts in the target. If time allows in the future I will try to rewrite to use chunking combinde with insert..select.
Thanks to all for your help,
Thomas -
How to find lock and more information why the conc prg taking to much time
Oracle Apps R12- Orader Management
Hi All
I am new to Oracle Apps,We i run my concurrent Program
its take too much time to complete.How to find that there is any lock occur in table while the concurrent program is running, any other way to find why the concurrent program takes too much of time to execute and how can we speed up the process.
Yesterday day we makes some change to speed up the process with our DBA to speed up the concurrent program
The first concurrent program takes 2.30 hours and after these changes its take 1.45 hours.Please suggest it is correct
Logged with System Administrator Responsibility.
Manager – Define – Standard Manager.
Set the PROCESSES value as 15 (changed from 10).
Set the SLEEP SECONDS value as 10 (Changed from 30).
Manager – Define – Standard Manager2.
Set the PROCESSES value as 15 (changed from 10).
Set the SLEEP SECONDS value as 10 (Changed from 60).
Any suggestion on how find why it takes too much of time.
Any help is highly appricatable
Thanks & Regards
Srikkanth.MHi;
Please check below notes:
FAQ: Common Tracing Techniques within the Oracle Applications 11i/R12 [ID 296559.1]
FAQ - How to Use Debug Tools and Scripts for the APS Suite [ID 245974.1]
Turning Debug Mode On [ID 148140.1]
How to Obtain Debug Log in R12 [ID 787727.1]
How to enable and retrieve debug log messages [ID 433199.1]
Running a Trace on a Form [ID 148143.1]
Running a Trace on a Process [ID 148145.1]
Regard
Helios -
Start up times vary - why? (MBP 10.8.3 with two drives)
I have a new MBP with 10.8.3 and two drives, an SSD and an internal.
Just curious as to why I get two varied startup times.
1. press startup button and within 3 seconds I hear the chime and the screen lights up.
2. press startup button and within about 12 seconds I hear the chime and the screen lights up.
Any thoughts as to why?1 and 2 are both the same. I'm assuming I am starting up from the SSD drive because that is where all my applications are. The internal drive is just for storage.
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Why is FF sucking up so much CPU time & Why can I not preform a search on FAQ's?
Why is FF sucking up so much CPU time &
Why can I not preform a search on FAQ's?
FF is sucking up way too much CPU time from 30 to 98% for great/long periods of time on a Sony Vaio laptop platform running P4 CPU w/XP prof w/SP3 & 2Gb RAM.
Why can I not preform a search on FAQ's so that might not have repeat a question that might have been asked previously?
Searching 24xx pages is not my idea of how to spend precious time to find an answer that I am looking for.Safe mode or turning off the plugins does not work with this bug. If they are still installed firefox will open plugincontainer, the plugins need to be uninstalled or disabled at OS level.
"''clearing Cookies will start an instance of plugin-container for almost all of the plugins installed on the system, regardless of enable/disable state for each one.''" -
Issues with using SV Time-Varying Loudness.vi
Hi,
I am rather new to Labview and am having issues getting my Time-Varying Loudness calcuations to come out correctly. Attached is my current VI and a .csv file of a set of my data (calibrated in Pa. Sample rate = 50kHz for 5 seconds). When i run the VI it does not output what I would expect. Here are my questions:
Time-Varying Loudness:
1) What are there so many signals? There are hundreds of lines, but I only expected one.
2) Why is my x-axis not a range of 1 to 24 like Barks should be?
1/3 Octave Band Analsysis:
1) Why does it look incorrect? Their shouldnt be a linear increase as a function of frequency...
The data is of a part being squeezed and making a squeek. So it is a transient noise that happens around 2 seconds. Additionaly, how would I go about making a waterfall (Time(s),Frequency(Hz),Amplidtude(sones)) of this signal? Is there any easy way? or do I have to make all three signals and add them to make one plot?
Thank you for your help! Let me know if you need more infromation,
-Troy
p.s. i included a picture of the results as well.
Solved!
Go to Solution.
Attachments:
TimeVaryingIssue.zip 668 KBHi Troy,
1) The SV Specific Loudness VI "chunks" data into 2 ms blocks, and then returns these as individual Specific Loudness vs. Sone plots. The colored lines you are seeing on your graph are representative of the 2,500 2 ms time periods within your five-second acquisition. Each of these plots contains 241 points, however they should occur in ten sample "steps", one for each sone. The digital filter's buffer takes a bit to fill and kick in properly, however, so you may want to give your first few rows( 0-.02 seconds or so) a closer look before using them- you may see a number of unexpected zeroes around the lowest sones.
2) Since you are using a chart, the x-axis will increment with every subsequent run (the previous data is retained.) If you only want to display the most recent data, I would recommend switching to a graph, which can also be found in the graph controls palette. Also, see above (#1) for why the x-axis is longer than 24 points.
3) Remember that dB is a unitless measure, and can only be used in reference to another value. A typical reference for sound is 20 uPa, however you will likely need to equalize your input data and determine/set a dB reference. You may want to take a look at SVL Scale voltage to EU.vi (EU stands for equalized units) and SVL Set dB reference.vi. In your case, I believe the Octave plot is showing your dB relative to a default value of 1. The values should be accurate with respect to one another, but you will need to provide a reference value to calibrate the scale.
4) I think that this VI serves as a good example of how to go about creating a waterfall plot:
Waterfall Display for Octave (DAQmx)
http://zone.ni.com/devzone/cda/epd/p/id/5562
You will need to break up your waveform into chunks, much like the specific loudness VI, but the basic concept is roughly the same (take waveform chunk, take octave measurement of chunk, append octave measurement output cluster to array of clusters, repeat for remainder of waveform, display)
Phew! That was quite a bit of information. Let me know if that makes sense, and don't be intimidated by the detail and/or unfamiliar functions or methods - you're definitely on the right track, or at the very least asking the right questions.
Tom L. -
Why does signal strength vary on my Westell 327W?
My wife uses her laptop about 40 feet away from our router, in our house (conventional wood construction, no wireless devices or wireless phones in use in the house, in the suburbs).
Her signal strength varies during the day from low to very good--sometimes going from 1 to the other in one minute. I'm in the 'burbs, and there are not a lot of houses near mine. Can someone tell me why her signal strength should vary so much, and what I can do about it?No, hmm...
#1
MrCurious2 wrote:
with nothing else going on in the vicinity.
Not even other radios (Like police officers, fire fighters, medial personal) in the area in use?
#2 What Firmware is it running?
If you have no idea of what I mean, take a screen shot of least the first screen that you see in the router - and post it.
For Windows, this means:
Pressing the "Print Screen" key on your keyboard, going to paint (Start--->All Programs--->Accesories--->Paint), pressing CTRL and P at the same time, saving the file as a JPEG (use "save as type" as need be), uploading it some where (I use tinypic.com - unless a message board allows uploading the image directly), and giving out the URL of the image..
^^
If you are the original poster (OP) and your issue is solved, please remember to click the "Solution?" button so that others can more easily find it. If anyone has been helpful to you, please show your appreciation by clicking the "Kudos" button. -
Encoding / Burning Time On Different Computers
We just purchased a few new Mac's.... an iMac 27"w/ Intel i5 2.8 and a MacPro w/ 2x 2.4 Xeon Quad-Core processor.
We bought the iMac's for simple photo editing and printing and the MacPro's for encoding and burning DVD's ... and now I am finding both encoding and burning the same, not good!
The encoding and burning time is almost the same on both computers... Actually the iMac is a little quicker (more then 5 minutes) then the Mac Pro
Why is the encoding time on both Macs basically the same?
My source files are MP4 H.264 10.05Mbit to be burns on a SD DVD (NTSC). We are putting about 25mins of footage on the DVD's.
Am I missing something? Should the Mac Pro with double ram and double processor be faster? Maybe a setting to speed up the encoding time on the Mac Pro?
Thank you for any help!Hi William Q
Welcome to Apple discussions. Great question! Most Mac applications (iDvd included) are multi-threaded, at least to some degree. Multiple processors often boost performance in most multi-threaded applications as well as when one is multitasking; or having multiple applications running all at the same time.
The way to tell this is to run /Applications/Utilities/Activity Monitor.app, then right-click (or control-click) on the columns header line and ensure that the "# Threads" column is checked.
Now run your application(s) (as shown below) and you will see the number of threads they are executing. Note that this number varies according to what exactly the app is currently doing, as temporary task-specific threads may be created only when needed.
click here
Watch what happens when I launch iDvd as well as multiple apps, including FCP.
click here
Message was edited by: SDMacuser -
Why are Windows 'APP's so much harder to code than a Windows Forms application?
For example I have been smashing my head against a wall trying to save an image file from a share target, the best help I can find is the below code:
https://social.msdn.microsoft.com/Forums/en-US/65a61679-0da8-4109-8a69-b918be351dfa/how-to-save-a-bitmap-image-from-a-share-target?forum=winappswithcsharp&prof=required
But in a 'normal' application I can do what I need to do with:
using System;
using System.Drawing;
namespace Project1
class Class1
static void Main()
Image photo = Image.FromFile("C:\\Temp\\oldphoto.png");
photo.Save("C:\\Temp\\newphoto.png");
Why do the APPs take so much more code to do something like save a file to disk?
Mediocre Access 2010 | (Baby) Beginner C Sharp | OK at Active Directory (2012) | Fragmented understanding of DNS/DHCP | Laughable experience with Group Policy | Expert question asker on MSDN ForumsIt is a good question!
If you need 100 lines of code to save an image it is like a Java program:
- complicated
- not fun to develop with
I think the main problem is that Microsoft release 2 new libraries each year. On the most cases, if you try to compile it with an old library it works, but the app crashes with unexpected errors. It is always harder to develop for Windows and there
are always more libraries to use.
So it begun to be normal, to find a W8-store-app-library and use it in Silverlight, to add missing functionality.
It is a jungle and it seems that Microsoft too doesn't know anymore what library should be in the msdn-help. Some times, if you search for something, you finish on a library that can't be added to your project.
This is the reason, because your question will probably never be answered! -
In iTunes: why different run times for same track?
I have occasional repeats of the same given track stored in iTunes. Sometimes, the 2 identical tracks show different running times. This happens when one track came from the Net (downloaded before I started using iTunes, then imported into iTunes) and the other comes from a commercial CD. Do you know why the differing times? FYI: In each case, I have checked the endings of both tracks; they are identical, so the music is the same even though one track is rated to run [much] longer than the other. Also, in "Get Info" there's a way to change the running time of a track, but this is no solution: if I enter a shorter run time, the track will truncate itself, and finish playing before the proper end of the song -- if I enter a longer time, I get dead air after the end of the recording. Any ideas?
Windows XP
Windows XP Pro
Windows XP Pro"will iphone users in Singapore have access to application from other countries? "
No. You can buy from the itunes store in the country in which you reside.
Each country has the same rules:
"SINGAPORE ONLY. The Service is available to you only in Singapore and is not available in any other location. You agree not to use or attempt to use the Service from outside of the available territory. iTunes may use technologies to verify such compliance."
http://www.apple.com/legal/itunes/appstore/sg/terms.html#APPS -
Why the execution time increases with a while loop, but not with "Run continuously" ?
Hi all,
I have a serious time problem that I don't know how to solve because I don't know exactly where it comes from.
I command two RF switches via a DAQ card (NI USB-6008). Only one position at the same time can be selected on each switch. Basically, the VI created for this functionnality (by a co-worker) resets all the DAQ outputs, and then activates the desired ones. It has three inputs, two simp0le string controls, and an array of cluster, which contains the list of all the outputs and some informations to know what is connected (specific to my application).
I use this VI in a complex application, and I get some problems with the execution time, which increased each time I callled the VI, so I made a test VI (TimeTesting.vi) to figure out where the problem came from. In this special VI I record the execution time in a csv file to analyse then with excel.
After several tests, I found that if I run this test VI with the while loop, the execution time increases at each cycle, but if I remove the while loop and use the "Run continuously" funtionnality, the execution time remains the same. In my top level application I have while loops and events, and so the execution time increases too.
Could someone explain me why the execution time increases, and how can I avoid that? I attached my test VI and the necessary subVIs, as well as a picture of a graph which shows the execution time with a while loop and with the "run continuously".
Thanks a lot for your help!
Solved!
Go to Solution.
Attachments:
TimeTesting.zip 70 KB
Graph.PNG 20 KBjul7290 wrote:
Thank you very much for your help! I added the "Clear task" vi and now it works properly.
If you are still using the RUn Continuously you should stop. That is meant strictly for debugging. In fact, I can't even tell you the last time I ever used it. If you want your code to repeat you should use loops and control the behavior of the code.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot -
Why do photos take up so much space on my phone?
I have an iPhone 5, 16 gigs. I have 174 photos and 22 videos and it says that the photos take up 3.6g of my memory... My friend has over 2k photos and hers is at 4gigs. I saved my photos to iPhoto and I deleted all my photos and ran a test, I made sure photos were at 0gigs; Then i took 30 random photos and checked and it said that it took up 124mbs. 30 photos 124mbs. I don't understand why my photos take up so much space. I also bought the Beyonce album when it came out and thats the only music I bought and it says it takes up 1.1gigs and the 17 videos are at 974 mbs. help????
Import the photos to your computer, then sync them back with iTunes. The photos will be reduced in size and quality to fit on the iPhone without taking as much space as the original pictures.
Also make sure not to use HDR mode if you do not need that feature.
After you import your photos from Camera Roll or Saved Photos, you can use iTunes to sync them back to your device.
copied from iOS: Improve backup and restore times by importing Camera Roll or Saved Photos -
Import times vary-explain this to me please
Why is it that when I’m importing a CD to iTunes (this is with either a new CD or an old CD) the import times vary so drastically?
2. It displays the objects on the stage. (It displays them one by one in the order in which they
were dragged to the stage from the Library when you designed the game in the FLA.)what does he mean by saying display them on the stage?? because i cant see them without addchild method and he said the swf file display them??!!!!!!!!
are you using pure AS3 or are you using the design tool in CS4/5
when using the design tool in CS4/5 you can have objects in the library and drag them to the stage. this will automatically at the objects to the stage without having to call addChild()
if you are using pure AS3 you don't have access to this and you have to explicity add all you objects using addChild
Here’s the issue: if the class’s constructor method includes a reference to the stage or an object that
is on the stage that hasn’t yet been displayed, you’ll get an error message saying this: here i cant understand any single word!!
Error #1009: Cannot access a property or method of a null object reference.
you would only need to add a reference to the stage for non DisplayObjects (e.g. generally things that aren't sprites or MovieClips)
All DisplayObjects have access to the stage via the stage property. The stage property for an object is always null until you call addChild, not when they are constructed as you mention.
if you are trying to use the stageWidth and stageHeight property you shouldn't do this in the constructor of the object instead you would need to add an Event.ADDED_TO_STAGE listener and then do any configuration based ont he stage within this listener.
hope that clears it up a little -
Why do Mac's rock so much? I don't even own one and I'm all excited. My colleagues and customers use them, so I'm always in the vicinity of a Mac. I wonder if this worries the Microsoft peeps? I have an ipod.
Toshiba Satellite A10 Windows XP waiting for dual core ibook...Do you have any problems with compatibility between the two systems? Or do you not need to transfer much?
As far as developing Mac apps, if sales of Macs go up because of being able to run both Windows and OSX on the same machine like I think they will, that will be the best incentive of all for people to develop more Mac software - a much larger market to sell to. Imagine if Apple sales double or triple, we'd probably get and explosion of apps being made for it. Mac user would still prefer to use a Mac program whenever possible.
And I do run into the occasional situation when a Windows machine would be useful. My wife just bought some new phones for the house with all kinds of programming possibilities but the disk that came with them is only for XP. My cell phone is not backed up because there is no way to do it on a Mac. I can only buy Palm PDAs because they are the only ones that are Mac compatible. There is Missing Sync that can be used for PocketPC's but they are limited and there would still be some programs and features I wouldn't be able to use. Now, I like Palm's a great deal so it's not a real problem but I would like the option of getting something else.
And most of all, my all time favorite game - Macbrickout - which has never been upgrade to OSX and will not open into Classic would be available as Winbrickout. That alone would be worth it to me. -
Why did my time capsule stopped backing up?
Why would my time capsule stop backing up, it is set to delet when the drive is full?
LaPastenague wrote:
Many people report that TM no longer deletes old backups as it should.
That does happen sometimes, but for many different reasons.
TM should never run out of space
Yes, it can. First, remember that it deletes entire backups, not the backups of individual files. Second, it won't ever delete the last remaining backup.
So if it needs to do a very large backup, there needs to be room for the last remaining backup, plus the new one, plus some workspace. That's why we recommend that the TM drive be 3-4 times the size of the data it's backing-up. If it's much less than that, and there's a need for a large or full backup, there may not be enough room.
as i understand how it works, it should simply give a warning that the old backups need to be deleted.
That's how it worked on Leopard, if you had the "Warn when old backups are deleted" option checked -- the backup would fail if there wasn't room. All you had to do then was remove the check, but many folks didn't understand that.
So, effective with Snow Leopard, the option is now "Notify after old backups are deleted," and that's what happens -- old backups are deleted automatically when necessary, and a notice is sent only after the new backup completes.
It seems that after an upgrade install of the OS.. TM ceases to have the ability to delete old backups.. it simply runs out of space and refuses to backup.
Normally not. Some have turned out to be users who actually did a "clean install," erasing their internal HD. If you do that, and don't use either Setup Assistant or Migration Assistant to put your data back (and transfer Computer Settings), the erased drive is treated as a different one. In that case, TM will do a full backup, so requires a lot space.
However, effective with Mountain Lion, TM does add more space for "padding" than before, sometimes quite a bit more, so a drive that was barely large enough on Lion or earlier may be too small now.
EDIT: A good way to figure out what's going on is to look at the log messages, either by using Console and filtering for backupd, or via the widget in #A1 of Time Machine - Troubleshooting
Message was edited by: Pondini
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